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参数资料
型号： PI74FCT640T
厂商： Pericom Semiconductor Corp.
英文描述： Fast CMOS Octal Bidirectional Transceivers
中文描述： 快速CMOS八路双向收发器
文件页数： 4/4页
文件大小： 248K
代理商： PI74FCT640T
4
PS2012B 09/22/99
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PI74FCT245T/640T/645T
25 Ohm Series PI74FCT2245T/2640T/2645T
Octal BidirectionalTransceivers
PI74FCT245T/2245T Switching Characteristics over Operating Range
245T/2245T
Com.
Min.
245AT/2245AT 245CT/2245CT
Com.
Min.
Max.
245DT
Com.
Min
Com.
Parameters Description
Conditions
(1)
Max.
Min.
Max.
Max. Unit
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
A to B, B to A
Output Enable Time
OE to A or B
Output Disable Time
OE to A or B
(3)
Output Enable Time
T/R to A or B
Output Disable Time
(3)
T/R to A or B
(3)
C
L
= 50 pF
R
L
= 500 Ohm
1.5
7.0
1.5
4.6
1.5
4.1
1.5
3.8
ns
1.5
9.0
1.5
6.2
1.5
5.8
1.5
5.0
ns
1.5
7.5
1.5
5.0
1.5
4.8
1.5
4.3
ns
1.5
9.0
1.5
6.2
1.5
5.8
1.5
5.0
ns
1.5
7.5
1.5
5.0
1.5
4.8
1.5
4.3
ns
Notes:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter is guaranteed but not production tested.
PI74FCT640T/2640T Switching Characteristics over Operating Range
640T/2640T
Com.
Min.
640AT/2640AT 640CT/2640CT
Com.
Min.
Max.
640DT
Com.
Min.
Com.
Parameters Description
Conditions
(1)
Max.
Min.
Max.
Max. Unit
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
A to B, B to A
Output Enable Time
OE to A or B
Output Disable Time
OE to A or B
(3)
Output Enable Time
T/R to A or B
Output Disable Time
(3)
T/R to A or B
(3)
C
L
= 50 pF
R
L
= 500 Ohm
2.0
7.0
1.5
5.0
1.5
4.4
1.5
3.7
ns
2.0
13.0
1.5
6.2
1.5
5.8
1.5
5.0
ns
2.0
10.0
1.5
5.0
1.5
4.8
1.5
4.3
ns
2.0
13.0
1.5
6.2
1.5
5.8
1.5
5.0
ns
2.0
10.0
1.5
5.0
1.5
4.8
1.5
4.3
ns
PI74FCT645T/2645T Switching Characteristics over Operating Range
645T/2645T
Com.
Min.
645AT/2645AT 645CT/2645CT
Com.
Min.
Max.
645DT
Com.
Min.
Com.
Parameters
Description
Conditions
(1)
Max.
Min.
Max.
Max. Unit
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
A to B, B to A
Output Enable Time
OE to A or B
Output Disable Time
OE to A or B
(3)
Output Enable Time
T/R to A or B
Output Disable Time
(3)
T/R to A or B
(3)
C
L
= 50 pF
R
L
= 500 Ohm
1.5
9.5
1.5
4.6
1.5
4.1
1.5
3.8
ns
1.5
11.0
1.5
6.2
1.5
5.8
1.5
5.0
ns
1.5
12.0
1.5
5.0
1.5
4.8
1.5
4.3
ns
1.5
11.0
1.5
6.2
1.5
5.8
1.5
5.0
ns
1.5
12.0
1.5
5.0
1.5
4.8
1.5
4.3
ns
Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
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